session « ID « JPA Q&A





1. Save new object with Hibernate using supplied ID    stackoverflow.com

I want to save some Objects to database with predefined IDs using Hibernate. Is it possible to do it using save method of Hibernate session? I know there are following workarounds: 1) ...

2. Determining Whether an Object Exists in Session for given ID    forum.hibernate.org

Is there a way to determine whether there exists an object in the Hibernate session for a given identifier, without resulting in calling the database? If it doesn't exist in the session I want to know, but not to load it in from the database. The contains() method takes an object instance and checks whether the actual instance exists within the ...

3. session.contains() by id    forum.hibernate.org

I need to check if a particular object is already cached by the sesssion using it's id, Is it possible? I need to know is the object is cache before using the get method, I don't want hibernate to go to the database. Is there a way to query directly the cache?

5. 2+ references to the same entity id in session.    forum.hibernate.org

I'm developing a webapp with Hibernate 2.1.7 + Spring, using OpenSessionInView. We have this situation: object A has references to object B and C. Both objects B and C have references to an object X. And B has a Set of C objects.. All hashCode and equals methods necessary are write. The mapping files are ok, only using common many-to-one and ...

8. Session.replicate() problem with custom ID    forum.hibernate.org

Hi. I'm trying to create some migration code and use Session.replicate(). So I simply make new object, set specific ID (the mapping is ) and call replicate() on it. I have such debug trace: Quote: Role object before replication - name: Users ;id: 25 Hibernate: select jbp_rid from jbp_roles where jbp_rid =? Hibernate: insert into jbp_roles (jbp_name, jbp_displayname, jbp_rid) values ...

9. Getting ClassCastException on id for session.save    forum.hibernate.org

Newbie Joined: Fri Jul 15, 2005 6:50 pm Posts: 3 Location: Bay Area, California,USA Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Getting ClassCastException for the id. Please look at the following Order.java snippet. I have xdoclet annotations and I have also posted the Order.hbm generated using the xdoclet annotations. ----------------------- -Order.java------------------------------------ /** * @hibernate.class table="MSL_ORDER" schema="MSL" */ public ...





10. Grabbing id generated back from session.save    forum.hibernate.org

11. Strange behaviour of: --session.get(class,id)    forum.hibernate.org

Hibernate version: 3.2 Hallo, I asked this question before, but unfortunately nobody could provide me any hint on this. I think this is an error, since Hibernate shows different behaviour depending on 2nd-level-cache on or off. Any help would be greatly appreciated! Andreas ---------------------------------------------------------------------------- I have the following mapping file: Code:

12. Session save with existing id    forum.hibernate.org

hello, i'm using hibernate 3.2.3 here is my code Code: public void insert(User user) { session.save(user); session.flush(); } all is good. if i try to insert a duplicate record an exception is thrown, as it should be. the problems is... the logs show ...

13. Reading ID values after session.save(object)    forum.hibernate.org

Hi, i think that is a config problem, so... i put here some, the problem. If necessary, i will update with more informations. The problem is simple: . . . User user = new User(); user.setName("Name"); session.save (user); System.out.println("Generated ID: " + user.getId); . . . session.commit, bla bla bla... . . The user.getId does not return generated value (Oracle sequences) ...